Topic:"Generator Interconnection" in M12916

6 Nova Scotia Effective Load Carrying Capability Study, Energy+Environmental Economics, June 2026. Generation Resource Fuel Type Owner Capacity (MW) ELCC (%) Firm Capacity (MW) Total Steam 1590.0 - 1590.0 Combined Cycle Tufts Cove 4,5,6 Na...

AI summary The document presents a table listing various generation resources in Nova Scotia, including their fuel types, owners, capacities, Effective Load Carrying Capability (ELCC), and firm capacities. It includes data on natural gas, wind, solar, biomass, hydro, and battery energy storage systems, as well as independent power producers and wholesale market participants.

5.1.1 Interconnection Requirements IESO Nova Scotia sets performance and interconnection requirements for BESS, generation, and load connecting to the Nova Scotia transmission system. These performance and interconnection requirements will...

AI summary IESO Nova Scotia establishes interconnection requirements for BESS, generation, and load connecting to the transmission system. These requirements are being refined as technology advances and local experience grows. Inverter-based resources (IBRs) like solar and wind can be integrated, though they may require additional grid support mechanisms. The TSIR, last updated in February 2025, will be reviewed in 2026.

5.2.1 Generator and BESS Interconnection The Combined Transmission & Distribution (T&D) Advanced Stage Interconnection Request Queue[38](#page-23-1) provides the location and size of generating and BESS facilities seeking interconnection w...

AI summary The document outlines the status of generator and BESS interconnection requests in Nova Scotia, noting that 20 interconnection requests are associated with 18 projects expected to connect to the transmission system before 2030. These projects involve Transmission Provider's Interconnection Facilities (TPIF) and Network Upgrades (NU), though work related to these is not included in the report.

5.2.2 Large Load Interconnection Requests IESO Nova Scotia has received large-load requests with respect to proposed commercial and industrial projects. IESO Nova Scotia is conducting System Impact Studies for these projects based on the i...

AI summary IESO Nova Scotia is conducting System Impact Studies for large-load interconnection requests from commercial and industrial projects, based on information provided by interconnection customers about their facilities and operational profiles. Table 8 lists the locations and sizes of these facilities.

5.3.1 Western Valley Transmission System The Western Valley transmission study was initiated to identify if load growth and new generation in the area necessitate system upgrades and/or protection scheme changes. System upgrades could incl...

AI summary The Western Valley transmission study was initiated to assess if load growth and new generation in the area require system upgrades or changes to protection schemes. Upgrades may include reactive power sources, while protection changes may involve Automatic Action Schemes (AAS) or Remedial Action Schemes (RAS). The study covers 2027 and 2032 for both normal and N-1 scenarios, with 2027 results identifying necessary upgrades.

NON-CONFIDENTIAL b) Table 8 lists load projects which have requested a transmission interconnection study from IESO Nova Scotia. Tariff class is determined by the Load Serving Entity and this directly informs whether portions of the load c...

AI summary The document outlines that IESO Nova Scotia does not analyze how changes in system demand impact individual tariff classes, as this is the responsibility of Load Serving Entities. It also notes that the 2026 Integrated Resource Plan will assess the impact of adding large loads to the system, while the 20% planning reserve margin target is not expected to change.

Request IR – 17 - Refer to the 2026 Report Section 5 Transmission Planning, Sub-section 5.1.1 Interconnection - Requirements, page 22, mentioning various studies. - a) Refer to where it states, in reference to inverter-based resources (IBR...

AI summary The document requests specific studies related to inverter-based resources (IBRs) and grid-forming battery energy storage systems (BESS) mentioned in the 2026 Report Section 5.1.1. It asks for identification of the studies, whether they are specific to Nova Scotia or general industry studies, and copies if available. It also seeks information on the timeline for completing a study on interconnection requirements for IBRs.

Response IR - 17 a-c) System studies are ongoing as new IBR projects are submitted for interconnection to the Nova Scotia system. Some of these proposed facilities incorporate technology advances as well as enhanced OEM tuning experience,...

AI summary System studies are ongoing for new IBR projects in Nova Scotia, incorporating technological advances and enhanced OEM tuning. There is cautious optimism that some long-term synchronous support requirements may be replaced by grid-forming BESS with Nova Scotia-specific tuning.

1 Request IR – 18 - 2 Refer to the 2026 Report Section 5.2.1 Generator and BESS Interconnection, page 23, which - 3 states "there are twenty (20) Interconnection Requests associated with eighteen (18) projects - 4 currently anticipated to...

AI summary The document requests a full list of 20 interconnection requests and 18 associated projects anticipated to connect to Nova Scotia's transmission system before 2030, including project details such as name, generation type, installed capacity, and expected in-service date.

7 Response IR - 18 - 8 The table below provides the full list of 20 Interconnection Requests, 18 associated projects,

AI summary This section lists 20 interconnection requests and 18 associated projects. The details of these requests and projects are provided in a table.

NON-CONFIDENTIAL 1 Request IR – 19 - Refer to the 2026 Report 5.2.2 Large Load Interconnection Requests, page 23, referring to Table

AI summary The document references a specific section in the 2026 Report related to large load interconnection requests, specifically page 23 and Table 5.2.2.

Request IR-17 Refer to the 2026 Report Section 5 – Transmission Planning, Sub-section 5.1.1 Interconnection Requirements, page 22, mentioning various studies. - a. Refer to where it states, in reference to inverter-based resources (IBRs),...

AI summary Request IR-17 seeks clarification on studies referenced in the 2026 Report regarding interconnection requirements for inverter-based resources (IBRs) and grid-forming battery energy storage systems (BESS). The request asks for identification of specific studies, whether they are Nova Scotia-specific or general industry studies, and the anticipated timeline for completing ongoing studies.

Request IR-18 Refer to the 2026 Report Section 5.2.1 Generator and BESS Interconnection, page 23, which states "there are twenty (20) Interconnection Requests associated with eighteen (18) projects currently anticipated to connect to the N...

AI summary Request IR-18 asks for the full list of 20 interconnection requests and 18 associated projects anticipated to connect to the Nova Scotia transmission system before 2030, including details such as project names, generation types, installed capacities, and expected in-service dates.

7 Reference: Section 5.2.2 Large Load Interconnection Requests; Table 8: Large-Load SIS. - 8 (a) Please provide a status update on each of the projects listed in Table 8 and 9 the System Impact Studies being completed, and whether IESO-NS...

AI summary The document requests an update on the status of large load interconnection projects, details on load classifications, system demand analysis, reliability impacts, load forecast inclusion, and the implications of adding these loads to the forecast. It focuses on the Nova Scotia Independent Energy System Operator (IESO-NS) and its processes.

ould be a factor in the planning process, and contingencies ought to be considered. IESO-NS should be planning accordingly, especially given the near-term resource adequacy needs tied to this project. Fast-acting generation and battery sto...

AI summary The document discusses contingency planning for key resource additions, highlighting the need for IESO-NS to account for project delays and their impact on PRM and reliability. It notes that fast-acting generation and battery storage are critical but may face delays, and coal conversions depend on unresolved equivalency agreements.